Counter-Pin

Pins are often so powerful that it becomes a matter of habit to think of them as invincible. They are not. That is the sad discovery that Black makes in the following position:

Black's position is anything but inviting, his King is uncastled, his pieces poorly developed, and his Knight at e5 has to retreat.

Instead of giving way, Black tries a desperate swindle which threatens to pin and win White's Queen.